Abstract
High saturation magnetic flux density (Bs) nanocrystalline alloys are increasingly attractive due to their unique microstructure and outstanding magnetic performance. In this work, we report that the substitution of B for P essentially improves the Bs of FePBCCu amorphous alloys. Based on high Bs amorphous matrix, the Fe83.2P8B2C6Cu0.8 nanocrystalline alloy with high Bs of 1.77 T, low coercivity of 3.6 A/m and high effective permeability of 20,600 was developed. Such magnetic performance of Fe83.2P8B2C6Cu0.8 nanocrystalline alloy is closely associated with the uniform refined composite microstructure, where the α-Fe nanocrystals with high volume fraction, small size and high number density (~1.8 × 1023 m − 3) were formed. This finding makes the FePBCCu composite a kind of promising soft-magnetic material in electrical and electronic fields.
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